| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT RUN-TIME COMPONENTS -- |
| -- -- |
| -- S Y S T E M . W W D _ W C H A R -- |
| -- -- |
| -- B o d y -- |
| -- -- |
| -- Copyright (C) 1992-2005, Free Software Foundation, Inc. -- |
| -- -- |
| -- GNAT is free software; you can redistribute it and/or modify it under -- |
| -- terms of the GNU General Public License as published by the Free Soft- -- |
| -- ware Foundation; either version 2, or (at your option) any later ver- -- |
| -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- |
| -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- |
| -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- |
| -- for more details. You should have received a copy of the GNU General -- |
| -- Public License distributed with GNAT; see file COPYING. If not, write -- |
| -- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, -- |
| -- Boston, MA 02110-1301, USA. -- |
| -- -- |
| -- As a special exception, if other files instantiate generics from this -- |
| -- unit, or you link this unit with other files to produce an executable, -- |
| -- this unit does not by itself cause the resulting executable to be -- |
| -- covered by the GNU General Public License. This exception does not -- |
| -- however invalidate any other reasons why the executable file might be -- |
| -- covered by the GNU Public License. -- |
| -- -- |
| -- GNAT was originally developed by the GNAT team at New York University. -- |
| -- Extensive contributions were provided by Ada Core Technologies Inc. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| with Interfaces; use Interfaces; |
| |
| with System.WWd_Char; |
| |
| package body System.Wwd_WChar is |
| |
| ------------------------------------ |
| -- Wide_Wide_Width_Wide_Character -- |
| ------------------------------------ |
| |
| -- This is the case where we are talking about the Wide_Wide_Image of |
| -- a Wide_Character, which is always the same character sequence as the |
| -- Wide_Image of the same Wide_Character. |
| |
| function Wide_Wide_Width_Wide_Character |
| (Lo, Hi : Wide_Character) return Natural |
| is |
| begin |
| return Wide_Width_Wide_Character (Lo, Hi); |
| end Wide_Wide_Width_Wide_Character; |
| |
| ------------------------------------ |
| -- Wide_Wide_Width_Wide_Wide_Char -- |
| ------------------------------------ |
| |
| function Wide_Wide_Width_Wide_Wide_Char |
| (Lo, Hi : Wide_Wide_Character) return Natural |
| is |
| LV : constant Unsigned_32 := Wide_Wide_Character'Pos (Lo); |
| HV : constant Unsigned_32 := Wide_Wide_Character'Pos (Hi); |
| |
| begin |
| -- Return zero if empty range |
| |
| if LV > HV then |
| return 0; |
| |
| -- Return max value (12) for wide character (Hex_hhhhhhhh) |
| |
| elsif HV > 255 then |
| return 12; |
| |
| -- If any characters in normal character range, then use normal |
| -- Wide_Wide_Width attribute on this range to find out a starting point. |
| -- Otherwise start with zero. |
| |
| else |
| return |
| System.WWd_Char.Wide_Wide_Width_Character |
| (Lo => Character'Val (LV), |
| Hi => Character'Val (Unsigned_32'Min (255, HV))); |
| end if; |
| end Wide_Wide_Width_Wide_Wide_Char; |
| |
| ------------------------------- |
| -- Wide_Width_Wide_Character -- |
| ------------------------------- |
| |
| function Wide_Width_Wide_Character |
| (Lo, Hi : Wide_Character) return Natural |
| is |
| LV : constant Unsigned_32 := Wide_Character'Pos (Lo); |
| HV : constant Unsigned_32 := Wide_Character'Pos (Hi); |
| |
| begin |
| -- Return zero if empty range |
| |
| if LV > HV then |
| return 0; |
| |
| -- Return max value (12) for wide character (Hex_hhhhhhhh) |
| |
| elsif HV > 255 then |
| return 12; |
| |
| -- If any characters in normal character range, then use normal |
| -- Wide_Wide_Width attribute on this range to find out a starting point. |
| -- Otherwise start with zero. |
| |
| else |
| return |
| System.WWd_Char.Wide_Width_Character |
| (Lo => Character'Val (LV), |
| Hi => Character'Val (Unsigned_32'Min (255, HV))); |
| end if; |
| end Wide_Width_Wide_Character; |
| |
| ------------------------------------ |
| -- Wide_Width_Wide_Wide_Character -- |
| ------------------------------------ |
| |
| function Wide_Width_Wide_Wide_Character |
| (Lo, Hi : Wide_Wide_Character) return Natural |
| is |
| begin |
| return Wide_Wide_Width_Wide_Wide_Char (Lo, Hi); |
| end Wide_Width_Wide_Wide_Character; |
| |
| end System.Wwd_WChar; |
